$ git clone -n https://src.fedoraproject.org/rpms/slimdata.git /var/lib/mock/f42-build-889386-188945/root/chroot_tmpdir/scmroot/slimdata
Cloning into '/var/lib/mock/f42-build-889386-188945/root/chroot_tmpdir/scmroot/slimdata'...
$ git fetch origin 0d86e3fb0e44e36e909db9d0831f8d5ef71fd8ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/slimdata
 * [new ref]         0d86e3fb0e44e36e909db9d0831f8d5ef71fd8ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d86e3f Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild