$ git clone -n https://src.fedoraproject.org/rpms/perl-Regexp-Stringify.git /var/lib/mock/f40-build-2020523-46636/root/chroot_tmpdir/scmroot/perl-Regexp-Stringify
Cloning into '/var/lib/mock/f40-build-2020523-46636/root/chroot_tmpdir/scmroot/perl-Regexp-Stringify'...
$ git fetch origin f0ffaf6611c4c8fa80ba7df12c72db0a8f81688d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Regexp-Stringify
 * [new ref]         f0ffaf6611c4c8fa80ba7df12c72db0a8f81688d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f0ffaf6 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild