$ git clone -n https://src.fedoraproject.org/rpms/perl-PDF-Builder.git /var/lib/mock/f39-build-1439082-32229/root/chroot_tmpdir/scmroot/perl-PDF-Builder
Cloning into '/var/lib/mock/f39-build-1439082-32229/root/chroot_tmpdir/scmroot/perl-PDF-Builder'...
$ git fetch origin 05444fbfd5f510733e7d3d927e5024ca3527bdd7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-PDF-Builder
 * [new ref]         05444fbfd5f510733e7d3d927e5024ca3527bdd7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05444fb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild