$ git clone -n https://src.fedoraproject.org/rpms/perl-AnyEvent.git /var/lib/mock/f39-build-1643718-40242/root/chroot_tmpdir/scmroot/perl-AnyEvent
Cloning into '/var/lib/mock/f39-build-1643718-40242/root/chroot_tmpdir/scmroot/perl-AnyEvent'...
$ git fetch origin e185632ce4262f2336452ac502b13d92031b34b6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-AnyEvent
 * [new ref]         e185632ce4262f2336452ac502b13d92031b34b6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e185632 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild