$ git clone -n https://src.fedoraproject.org/rpms/mypaint.git /var/lib/mock/f39-build-1580480-38067/root/chroot_tmpdir/scmroot/mypaint
Cloning into '/var/lib/mock/f39-build-1580480-38067/root/chroot_tmpdir/scmroot/mypaint'...
$ git fetch origin 3917b4d812ab77f204f2a6141f5fd20a4a54e6a2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mypaint
 * [new ref]         3917b4d812ab77f204f2a6141f5fd20a4a54e6a2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3917b4d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild