$ git clone -n https://src.fedoraproject.org/rpms/libchamplain.git /var/lib/mock/f42-build-883184-185137/root/chroot_tmpdir/scmroot/libchamplain
Cloning into '/var/lib/mock/f42-build-883184-185137/root/chroot_tmpdir/scmroot/libchamplain'...
$ git fetch origin c48913bdad7768b93338b0adff3d666dc85f0968:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libchamplain
 * [new ref]         c48913bdad7768b93338b0adff3d666dc85f0968 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c48913b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild