$ git clone -n https://src.fedoraproject.org/rpms/pcem.git /var/lib/mock/f42-build-3494622-45873/root/chroot_tmpdir/scmroot/pcem
Cloning into '/var/lib/mock/f42-build-3494622-45873/root/chroot_tmpdir/scmroot/pcem'...
$ git fetch origin 92f2b3bb854f52d57307d7e9cc3448a4198b9749:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pcem
 * [new ref]         92f2b3bb854f52d57307d7e9cc3448a4198b9749 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 92f2b3b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild