$ git clone -n https://src.fedoraproject.org/rpms/libsolv.git /var/lib/mock/f41-build-side-1-3127037-39531/root/chroot_tmpdir/scmroot/libsolv
Cloning into '/var/lib/mock/f41-build-side-1-3127037-39531/root/chroot_tmpdir/scmroot/libsolv'...
$ git fetch origin 5ecd2577e18ee944b59310ab109784e43cb3c97d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsolv
 * [new ref]         5ecd2577e18ee944b59310ab109784e43cb3c97d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ecd257 Update to 0.7.31