$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-LongString.git /var/lib/mock/f40-build-2309046-57332/root/chroot_tmpdir/scmroot/perl-Test-LongString
Cloning into '/var/lib/mock/f40-build-2309046-57332/root/chroot_tmpdir/scmroot/perl-Test-LongString'...
$ git fetch origin 9bc719500b89b4774febad35cd08e51dba553934:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-LongString
 * [new ref]         9bc719500b89b4774febad35cd08e51dba553934 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9bc7195 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild