$ git clone -n https://src.fedoraproject.org/rpms/perl-true.git /var/lib/mock/f40-build-732992-104941/root/chroot_tmpdir/scmroot/perl-true
Cloning into '/var/lib/mock/f40-build-732992-104941/root/chroot_tmpdir/scmroot/perl-true'...
$ git fetch origin 117a46d82d6e22fc252ed0800156607ca75efc0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-true
 * [new ref]         117a46d82d6e22fc252ed0800156607ca75efc0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 117a46d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild