$ git clone -n https://src.fedoraproject.org/rpms/perl-B-Hooks-OP-Check.git /var/lib/mock/f40-build-2301712-56813/root/chroot_tmpdir/scmroot/perl-B-Hooks-OP-Check
Cloning into '/var/lib/mock/f40-build-2301712-56813/root/chroot_tmpdir/scmroot/perl-B-Hooks-OP-Check'...
$ git fetch origin e3f712b9c5c7a5a3b7b844915628eacef09ddf80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-B-Hooks-OP-Check
 * [new ref]         e3f712b9c5c7a5a3b7b844915628eacef09ddf80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3f712b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild