$ git clone -n https://src.fedoraproject.org/rpms/pcem.git /var/lib/mock/f38-build-side-42-init-devel-1310412-30687/root/chroot_tmpdir/scmroot/pcem
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1310412-30687/root/chroot_tmpdir/scmroot/pcem'...
$ git fetch origin f497262d69212f13e75ceb6074c1657ad1aadfcd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcem
 * [new ref]         f497262d69212f13e75ceb6074c1657ad1aadfcd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f497262 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild