$ git clone -n https://src.fedoraproject.org/rpms/sile.git /var/lib/mock/f41-build-850236-165181/root/chroot_tmpdir/scmroot/sile
Cloning into '/var/lib/mock/f41-build-850236-165181/root/chroot_tmpdir/scmroot/sile'...
$ git fetch origin c042a82a5ddd6e3c51fc7cdfa2c163cc68398d1e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sile
 * [new ref]         c042a82a5ddd6e3c51fc7cdfa2c163cc68398d1e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c042a82 Initial import (fedora#2149698).