$ git clone -n https://src.fedoraproject.org/rpms/rust-glycin.git /var/lib/mock/f40-build-1858823-24992/root/chroot_tmpdir/scmroot/rust-glycin
Cloning into '/var/lib/mock/f40-build-1858823-24992/root/chroot_tmpdir/scmroot/rust-glycin'...
$ git fetch origin 183e2c8c683bcd549b9091e2282dac589c32c3f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-glycin
 * [new ref]         183e2c8c683bcd549b9091e2282dac589c32c3f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 183e2c8 Update to version 1.0.2; Fixes RHBZ#2274252