$ git clone -n https://src.fedoraproject.org/rpms/dcmtk.git /var/lib/mock/f40-build-763292-122461/root/chroot_tmpdir/scmroot/dcmtk
Cloning into '/var/lib/mock/f40-build-763292-122461/root/chroot_tmpdir/scmroot/dcmtk'...
$ git fetch origin 3e6cc2237a193445b46f7131a3f58ac6daba9845:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dcmtk
 * [new ref]         3e6cc2237a193445b46f7131a3f58ac6daba9845 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e6cc22 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild