$ git clone -n https://src.fedoraproject.org/rpms/dtach.git /var/lib/mock/f42-build-3350060-45010/root/chroot_tmpdir/scmroot/dtach
Cloning into '/var/lib/mock/f42-build-3350060-45010/root/chroot_tmpdir/scmroot/dtach'...
$ git fetch origin e00fe6b813b67c45e9c86df19eb1c534024271fb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dtach
 * [new ref]         e00fe6b813b67c45e9c86df19eb1c534024271fb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e00fe6b Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild