$ git clone -n https://src.fedoraproject.org/rpms/fastfetch.git /var/lib/mock/f41-build-837150-158987/root/chroot_tmpdir/scmroot/fastfetch
Cloning into '/var/lib/mock/f41-build-837150-158987/root/chroot_tmpdir/scmroot/fastfetch'...
$ git fetch origin e306e8c8a6a0b1d0cd54ba953f5be80a3f991e68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fastfetch
 * [new ref]         e306e8c8a6a0b1d0cd54ba953f5be80a3f991e68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e306e8c update to 2.21.1