$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-Can.git /var/lib/mock/f39-build-1434593-31936/root/chroot_tmpdir/scmroot/perl-Class-Can
Cloning into '/var/lib/mock/f39-build-1434593-31936/root/chroot_tmpdir/scmroot/perl-Class-Can'...
$ git fetch origin 4f7448fcd183adb6a85a8b3ee16fcd76f51ed09b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-Can
 * [new ref]         4f7448fcd183adb6a85a8b3ee16fcd76f51ed09b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f7448f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild