$ git clone -n https://src.fedoraproject.org/rpms/python-cryptography.git /var/lib/mock/f41-build-813088-148555/root/chroot_tmpdir/scmroot/python-cryptography
Cloning into '/var/lib/mock/f41-build-813088-148555/root/chroot_tmpdir/scmroot/python-cryptography'...
$ git fetch origin 143d2e3463f824c20b62b8c73688bdf950b2893d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-cryptography
 * [new ref]         143d2e3463f824c20b62b8c73688bdf950b2893d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 143d2e3 Fix the build for ELN