$ git clone -n https://src.fedoraproject.org/rpms/python-confuse.git /var/lib/mock/f45-build-30179-643/root/chroot_tmpdir/scmroot/python-confuse
Cloning into '/var/lib/mock/f45-build-30179-643/root/chroot_tmpdir/scmroot/python-confuse'...
$ git fetch origin dec272a0a4feaee75d15d19a4ef74fd5780551b3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-confuse
 * [new ref]         dec272a0a4feaee75d15d19a4ef74fd5780551b3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dec272a rhbz#2538309