$ git clone -n https://src.fedoraproject.org/rpms/perl-Unix-Mknod.git /var/lib/mock/f39-build-1439965-32300/root/chroot_tmpdir/scmroot/perl-Unix-Mknod
Cloning into '/var/lib/mock/f39-build-1439965-32300/root/chroot_tmpdir/scmroot/perl-Unix-Mknod'...
$ git fetch origin 5def58b3332324badd7650fe64618afdaa28791f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Unix-Mknod
 * [new ref]         5def58b3332324badd7650fe64618afdaa28791f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5def58b Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild