$ git clone -n https://src.fedoraproject.org/rpms/perl-Scalar-Does.git /var/lib/mock/f42-build-3161166-40896/root/chroot_tmpdir/scmroot/perl-Scalar-Does
Cloning into '/var/lib/mock/f42-build-3161166-40896/root/chroot_tmpdir/scmroot/perl-Scalar-Does'...
$ git fetch origin 208f8ffc199bc48f5b6b04e7c5d1717e14cd0494:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Scalar-Does
 * [new ref]         208f8ffc199bc48f5b6b04e7c5d1717e14cd0494 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 208f8ff Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild