$ git clone -n https://src.fedoraproject.org/rpms/perl-Alien-Packages.git /var/lib/mock/f40-build-2014896-46019/root/chroot_tmpdir/scmroot/perl-Alien-Packages
Cloning into '/var/lib/mock/f40-build-2014896-46019/root/chroot_tmpdir/scmroot/perl-Alien-Packages'...
$ git fetch origin f54dc8ecdf1781ec7b47aec3da175ea7baf323cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Alien-Packages
 * [new ref]         f54dc8ecdf1781ec7b47aec3da175ea7baf323cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f54dc8e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild