$ git clone -n https://src.fedoraproject.org/rpms/perl-Archive-Tar.git /var/lib/mock/f40-build-2619887-64632/root/chroot_tmpdir/scmroot/perl-Archive-Tar
Cloning into '/var/lib/mock/f40-build-2619887-64632/root/chroot_tmpdir/scmroot/perl-Archive-Tar'...
$ git fetch origin 3d671323e18b7654d8c39b353f0c0b0db87a357c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Archive-Tar
 * [new ref]         3d671323e18b7654d8c39b353f0c0b0db87a357c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d67132 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild