$ git clone -n https://src.fedoraproject.org/rpms/linux-system-roles.git /var/lib/mock/f39-build-1668198-40825/root/chroot_tmpdir/scmroot/linux-system-roles
Cloning into '/var/lib/mock/f39-build-1668198-40825/root/chroot_tmpdir/scmroot/linux-system-roles'...
$ git fetch origin fb31337f35c7bcf95617a516167d616f765db3bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/linux-system-roles
 * [new ref]         fb31337f35c7bcf95617a516167d616f765db3bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb31337 [packit] 1.58.0 upstream release