$ git clone -n https://src.fedoraproject.org/rpms/gmime.git /var/lib/mock/f41-build-side-1-2811680-32932/root/chroot_tmpdir/scmroot/gmime
Cloning into '/var/lib/mock/f41-build-side-1-2811680-32932/root/chroot_tmpdir/scmroot/gmime'...
$ git fetch origin 01591df71da1487482c98daf9fa8fe14d8f082e2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gmime
 * [new ref]         01591df71da1487482c98daf9fa8fe14d8f082e2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 01591df convert license to SPDX