$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Assert.git /var/lib/mock/f39-build-1528631-36191/root/chroot_tmpdir/scmroot/perl-Test-Assert
Cloning into '/var/lib/mock/f39-build-1528631-36191/root/chroot_tmpdir/scmroot/perl-Test-Assert'...
$ git fetch origin 701e8f1b86e601ed4f65c3bd07c95cfde4f7474e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Assert
 * [new ref]         701e8f1b86e601ed4f65c3bd07c95cfde4f7474e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 701e8f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild