$ git clone -n https://src.fedoraproject.org/rpms/rust-glycin.git /var/lib/mock/f41-build-side-1-3001606-36466/root/chroot_tmpdir/scmroot/rust-glycin
Cloning into '/var/lib/mock/f41-build-side-1-3001606-36466/root/chroot_tmpdir/scmroot/rust-glycin'...
$ git fetch origin 576f3f6bafca2e60e2f2f32901d1f1e9c8b63728:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-glycin
 * [new ref]         576f3f6bafca2e60e2f2f32901d1f1e9c8b63728 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 576f3f6 Update to version 2.0.1; Fixes RHBZ#2312188