$ git clone -n https://src.fedoraproject.org/rpms/gmime30.git /var/lib/mock/f39-build-1520607-35831/root/chroot_tmpdir/scmroot/gmime30
Cloning into '/var/lib/mock/f39-build-1520607-35831/root/chroot_tmpdir/scmroot/gmime30'...
$ git fetch origin 5e72fe8390103a6869ef1cd97fd178899416dd0f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gmime30
 * [new ref]         5e72fe8390103a6869ef1cd97fd178899416dd0f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e72fe8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild