$ git clone -n http://git.inferitos.ru/rpms/libgit2 /var/lib/mock/inferit-8_8-build-25859-44582/root/chroot_tmpdir/scmroot/libgit2
Cloning into '/var/lib/mock/inferit-8_8-build-25859-44582/root/chroot_tmpdir/scmroot/libgit2'...
$ git fetch origin changed/i8c/libgit2-0.26.8-2.el8:KOJI_FETCH_HEAD
From http://git.inferitos.ru/rpms/libgit2
 * [new tag]         changed/i8c/libgit2-0.26.8-2.el8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b183b77 edit changelog for import libgit2-0.26.8-2.el8