$ git clone -n https://src.fedoraproject.org/rpms/rust-ouroboros0.15.git /var/lib/mock/f38-build-side-43-rust-devel-1419390-31460/root/chroot_tmpdir/scmroot/rust-ouroboros0.15
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1419390-31460/root/chroot_tmpdir/scmroot/rust-ouroboros0.15'...
$ git fetch origin 4f00e36249b4073d1ab749ae7356de5192c47021:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ouroboros0.15
 * [new ref]         4f00e36249b4073d1ab749ae7356de5192c47021 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4f00e36 Initial import (ouroboros 0.15 compat package)