$ git clone -n http://git.inferitos.ru/rpms/vulkan-headers /var/lib/mock/inferit-8_8-bootstrap-build-28793-48643/root/chroot_tmpdir/scmroot/vulkan-headers
Cloning into '/var/lib/mock/inferit-8_8-bootstrap-build-28793-48643/root/chroot_tmpdir/scmroot/vulkan-headers'...
$ git fetch origin changed/i8c/vulkan-headers-1.3.250.1-1.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/vulkan-headers
 * [new tag]         changed/i8c/vulkan-headers-1.3.250.1-1.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85a9b56 import vulkan-headers-1.3.250.1-1.el8