$ git clone -n https://src.fedoraproject.org/rpms/rust-ecb0.1.git /var/lib/mock/f45-build-41384-782/root/chroot_tmpdir/scmroot/rust-ecb0.1
Cloning into '/var/lib/mock/f45-build-41384-782/root/chroot_tmpdir/scmroot/rust-ecb0.1'...
$ git fetch origin 824a4805360b2f6b60e17a34f58b3eef8ebfb782:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ecb0.1
 * [new ref]         824a4805360b2f6b60e17a34f58b3eef8ebfb782 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 824a480 Initial import (ecb v0.1 compat package)