$ git clone -n https://src.fedoraproject.org/rpms/libmacaroons.git /var/lib/mock/f42-build-883674-185413/root/chroot_tmpdir/scmroot/libmacaroons
Cloning into '/var/lib/mock/f42-build-883674-185413/root/chroot_tmpdir/scmroot/libmacaroons'...
$ git fetch origin 5d7bb45ca2797e302e9d32faab89381a873d3d13:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmacaroons
 * [new ref]         5d7bb45ca2797e302e9d32faab89381a873d3d13 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d7bb45 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild