$ git clone -n https://src.fedoraproject.org/rpms/libei.git /var/lib/mock/f40-build-2247060-53844/root/chroot_tmpdir/scmroot/libei
Cloning into '/var/lib/mock/f40-build-2247060-53844/root/chroot_tmpdir/scmroot/libei'...
$ git fetch origin a3d1d4860df4bf4056bde1a7f5b043a5e7b851d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libei
 * [new ref]         a3d1d4860df4bf4056bde1a7f5b043a5e7b851d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3d1d48 Handle OEFFIS_DEVICE_ALL_DEVICES correctly